HackerOne is a platform that connects organizations with ethical hackers to identify and fix security vulnerabilities in their systems. It operates on a bug bounty model, where companies reward hackers for discovering and reporting security issues, helping to enhance their cybersecurity. Founded in 2013, HackerOne has collaborated with numerous organizations, including major tech companies and government agencies. The platform fosters a community of security researchers, allowing them to showcase their skills while providing valuable insights to improve the security posture of participating organizations.